The description and use of the sector, crosse-staffe, and other instruments : with a canon of artificiall Sines and Tangents, and the use thereof in astronomie, navigation, dialling and fortification .. (1636)
Gunter, Edmund, 1581-1626 · London : Printed by William Iones for Iames Bowler · leaf 330
gr, 56 m. for the diftanceof the firft quarter from the meridian; and from the tangentof J gr 30 tn. vnto the tangent of 5 gr. 51 m. for the halfehoure; and from the tangent of 11 gr. 1 j m, to the tan-gent of 8 gr. 51 m. for the third quarter; and from the tan-gent of 15 gr. o m. vnto 11 gr, 50 w… … 4*> £r* 45 »*» for the finding of a quarter part 3, the otherfooie Will fall out of the line, and then I may either take outfo much as is out of the line beyond 45 gr. and turne it backeinto rhe line, and it will reach from 45 gr. to 41 gr. 45 m.or I may vfe croffe worke, extending the compafles…
Astronomy · Puritans
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